Cerebrospinal fluid Aβ42, phosphorylated Tau181, and resting-state functional connectivity.

Cerebrospinal fluid Aβ42, phosphorylated Tau181, and resting-state functional connectivity.
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DOI:
10.1001/jamaneurol.2013.3253
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发表时间:
2013-10
期刊:
影响因子:
29
通讯作者:
Ances, Beau M.
Ances, Beau M.
中科院分区:
医学1区
文献类型:
--
作者:
Wang, Liang;Brier, Matthew R.;Snyder, Abraham Z.;Thomas, Jewell B.;Fagan, Anne M.;Xiong, Chengjie;Benzinger, Tammie L.;Holtzman, David M.;Morris, John C.;Ances, Beau M.

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静息态功能连接磁共振成像(rs-fcMRI)具有很大的潜力,在阿尔茨海默病(AD)的临床前阶段的病理生理变化的特点。在认知正常的老年人中,评估默认模式网络(DMN)完整性与AD病理学脑脊液(CSF)生物标志物之间的关系。横断面队列研究,华盛顿大学圣刘易斯,密苏里州的Knight阿尔茨海默病研究中心。207名认知正常的老年人(临床痴呆评分为0)。DMN完整性的rs-fcMRI测量。CSF Aβ42减少或CSF磷酸化tau 181(ptau 181)增加与DMN完整性降低独立相关,其中在后扣带回和内侧颞区之间观察到的功能连接性降低最为明显。所观察到的功能连接的减少并不归因于年龄或结构性萎缩的后扣带回和内侧颞区。使用感兴趣区域分析和逐体素相关映射获得与CSF生物标志物相关的类似rs-fcMRI结果。Aβ和tau病理学均影响AD临床发作前的DMN完整性。
Resting state functional connectivity magnetic resonance imaging (rs-fcMRI) has great potential for characterizing pathophysiological changes during the preclinical phase of Alzheimer’s disease (AD). To assess the relationship between default mode network (DMN) integrity and cerebrospinal fluid (CSF) biomarkers of AD pathology in cognitively normal older individuals Cross-sectional cohort study Knight Alzheimer’s Disease Research Center at Washington University in St Louis, Missouri. 207 older adults with normal cognition (Clinical Dementia Rating of 0). rs-fcMRI measures of DMN integrity. Decreased CSF Aβ42 or increased CSF phosphorylated tau181 (ptau181) were independently associated with reduced DMN integrity, with the most prominent decreases in functional connectivity observed between the posterior cingulate and medial temporal regions. Observed reductions in functional connectivity were not attributable to age or structural atrophy in the posterior cingulate and medial temporal areas. Similar rs-fcMRI findings in relation to CSF biomarkers were obtained using region-of-interest analyses and voxel-wise correlation mapping. Both Aβ and tau pathology affect DMN integrity prior to clinical onset of AD.
CSF中Aβ42/P-TAU181P的比率与AD中的异常默认模式网络有关。
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